Ventilator



(MOdGL) J. PATGHETT.

- v VENTILATOR. No. 248,207. Patented 0013. 11,1881.

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1: 2F WITNESSES: i H E INVENTOR: i H t W m ATTORNEYS.

UNITED I STATES \PATENT OFFICE.

Y JOSEPH PATGHETT, OF LAWRENCE, MASSACHUSETTS.

VYENTILATOR.

. SPECIFICATION forming part of Letters Patent No. 248,207, datedOctober 11, 1881.

Application filed April 22, 1881. (ModeL) middle line of the inlet-flueand partly through the top immediately above the mouth of theoutlet-flue. Fig. 3 is also a vertical cross-sec- ,tion taken on theline 3 y of Fig. l; and Fig.

4 is a horizontal section taken on the line zz of Figs. 2 and 3.

Similar letters of reference indicate corresponding parts.

A represents the air-inlet flue and B the airoutlet flue. The top orouter opening of the air-outlet flue is on a higher level than that ofthe inlet-flue, and opens immediately under the cover 0. The top of theair-inlet flue is covered over, as shown at b, but receives the airthrough the side openings, 0, and the outer end or top of this flue isprovided above the opening 0 with the deflecting flange a and below withthe flange a, which is provided with the perforations a. These flangesmay surround the upper ends of both flues, if desired. The object ofthis construction of the flues is to give to the outgoing current asdirect a course as possible, and provide a circuitous passage for theincoming current.

Surrounding the top of the flues is secured the rim D, which may havethe ornamentation 61 secured to or formed upon it. This rim is secured asmall distance from the upper ends of the flues by means of the platesor studs 0 e, which are secured at intervals to the flues and the insideof the rim, and which are cut away at the top to form a seat for thecover G, which is of such size relative to the size of the flues thatwhen in place the edgei thereof will come to a line about midway betweenthe outer edge of the flues and the rim D, thus forming the passage 1)for the outgoing air.

When intended for use in windows or-similar places the flues should becurved or turned backward, and have the form as shown in the drawings,so that the ends thereof will reach past the frame and sash of thewindow, and the device should be provided with the exticular formnecessary, as the same may be modified to suit the various localities inwhich it is to be attached to the building or room and not depart fromthe spirit of my invention.

By the use of a ventilator thus constructed the vitiated air of a roomor building will be rapidly replaced by the external air withoutcreating cold current or drafts through the. room or building, which areso dangerous to health.

Having thus fully described my invention, I claim as new, and desire tosecure by Letters Patent- 1. In a ventilator, the outlet-flue B, incombination with the inlet-flue A, the inlet-flue being covered at thetop and formed with the side opening, 0, substantially as and for thepurposes specified.

2. In a ventilator, the outlet-flue B, in combination with theinlet-flue A, the top or outer opening of the outlet-flue being on ahigher level than the side opening of the inlet-flue, substantially asand for the purposes specified.

3. The outlet-flue B and the covered inletflue A, in combination withtherim D and the cover 0, substantially as and for the purposesspecified.

4. The outlet-flue B and the covered inletflue A, formed with the sideopening, 0, and provided with the deflector 0b and the perforated flangea, in combination with the rim D, substantially as and for the purposesspecified.

5. The outlet-flue B and the inlet-flue A, formed with the opening 0, incombination with the flue it, formed by the cover 0 and the rim D,substantially as and for the purposes specified. Y

6. The herein-described ventilator, consist ing of the inlet-flue A, cap1), opening c,flanges a a, perforations a, rim D, plates 0, cover 0,passage h, and outlet-flue B, substantially as and for the purposesspecified.

JOSEPH PATOHETT.

Witnesses J OSEPH OGDEN, J OSEPH CRABTREE.

